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Efficiency of source control systems for reducing runoff pollutant loads: Feedback on experimental catchments within Paris conurbation.

Abstract : : Three catchments, equipped with sustainable urban drainage systems (SUDS: vegetated roof, underground pipeline or tank, swale, grassed detention pond) for peak flow mitigation, have been compared to a reference catchment drained by a conventional separate sewer system in terms of hydraulic behaviour and discharged contaminant fluxes (organic matter, organic micropollutants, metals). A runoff and contaminant emission model has been developed in order to overcome land use differences. It has been demonstrated that the presence of peak flow control systems induces flow attenuation even for frequent rain events and reduces water discharges at a rate of about 50% depending on the site characteristics. This research has also demonstrated that this type of SUDS contributes to a significant reduction of runoff pollutant discharges, by 20%-80%. This level of reduction varies depending on the considered contaminant and on the design of the drainage system but is mostly correlated with the decrease in runoff volume. It could be improved if the design of these SUDS focused not only on the control of exceptional events but also targeted more explicitly the interception of frequent rain events.
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https://hal-enpc.archives-ouvertes.fr/hal-00981540
Contributeur : Adèle Bressy <>
Soumis le : mardi 22 avril 2014 - 14:13:15
Dernière modification le : mardi 21 juillet 2020 - 10:34:06
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Adèle Bressy, Marie-Christine Gromaire, Catherine Lorgeoux, Mohamed Saad, Florent Leroy, et al.. Efficiency of source control systems for reducing runoff pollutant loads: Feedback on experimental catchments within Paris conurbation.. Water Research, IWA Publishing, 2014, 57C, pp.234-246. ⟨10.1016/j.watres.2014.03.040⟩. ⟨hal-00981540⟩

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